About Pacemakers

A pacemaker sends electrical impulses to restore the heart's rhythm. Today's streamlined pacemakers, like the market-leading options from Medtronic, weigh about 1 ounce. But this small device has helped millions of people live more active lives.

Bradycardia is a slow or irregular heart rhythm, usually fewer than 60 beats per minute. At this rate, the heart is not able to pump enough oxygen-rich blood to your body during normal activity or exercise. As a result, you may feel dizzy or have chronic lack of energy, shortness of breath, or even fainting spells.

What Is It?

Pacemaker therapy is the most common way to treat bradycardia. A pacemaker helps restore the heart's rhythm. By sending tiny electrical signals to the heart to increase the heart rate, a pacemaker can relieve the symptoms of bradycardia.More